| Acronym | Definition |
|---|
| RMN | Reunion des Musées Nationaux (France) |
| RMN | Résonance Magnétique Nucléaire |
| RMN | Resonancia Magnética Nuclear (Spanish) |
| RMN | Rocky Mountain News |
| RMN | Registered Mental Nurse (UK) |
| RMN | Royal Malaysian Navy |
| RMN | Royal Manticoran Navy (Honor Harrington science fiction novels) |
| RMN | Radio Mindanao Network |
| RMN | Rete Mareografica Nazionale (Italian: National Tide Gauge Network) |
| RMN | Radio Montagnes Noires (French: Radio Black Mountains) |
| RMN | Richard Milhous Nixon (37th President of the USA) |
| RMN | Rocky Mountain Nordic |
| RMN | Retail Media Network |
| RMN | Reserve Material Account Navy |